only set latest for downloaders (#126)

* only set latest for downloaders

* also set in onindex

archive.js

@@ -30,7 +30,7 @@ function Archive (drive, key, opts) {
   this.open = thunky(open)
   this.id = drive.id
 
-  this._onlyLatest = !!opts.file
+  this._onlyLatest = !!opts.file && !this.owner
   this._sparse = !!this.options.sparse
   this._closed = false
   this._appending = []
@@ -573,7 +573,10 @@ Archive.prototype._open = function (cb) {
     if (err) return cb(err)
     if (self._closed) return cb(new Error('Archive is closed'))
 
-    if (!self.owner && self.metadata.secretKey) self.owner = true // TODO: hypercore should tell you this
+    if (!self.owner && self.metadata.secretKey) {
+      self.owner = true // TODO: hypercore should tell you this
+      self._onlyLatest = false
+    }
 
     if (!self.owner || self.metadata.blocks) waitForIndex(null)
     else onindex(null)